Comfy mode only rendered the avatar for the first message of a group, so the
follow-ups had nothing holding that column open and slid left into it. A
group's second and third lines therefore sat out of line with its own first
line - every other client keeps a group's text on one left edge. Wrapped lines
never showed the problem, because a wrap happens inside message-content, which
was already positioned correctly.
Grouped rows now render the avatar slot too, just empty. An empty slot would
otherwise still claim its full 28px of height, padding every follow-up line
with about 9px of dead space, so it collapses vertically while keeping its
width.
Salastil